| Title | Country | State / Province | City | Phone | Email Sort ascending |
|---|---|---|---|---|---|
| Candela | United States | Washington | Lynnwood | 206 667-0511 | |
| Mitchell B. Kohn Lighting Design | United States | Illinois | Highland Park | 847 433-0840 | |
| BNA Consulting | United States | Utah | St. George | 435 628-3670 | |
| William Lam Inc. | United States | Massachusetts | Cambridge | 617 576-4662 | |
| Douglas Baker Co. | United States | Rhode Island | Newport | 401 846-9100 | |
| Robin Drake Design | United States | New York | New York | 212 925-6191 | |
| Abernathy Lighting Design, Inc. | United States | Rhode Island | Providence | 401 233-4412 | |
| Albert Chong Assoc | United States | Hawaii | Honolulu | 808 738-5355 | |
| C. Welker Lighting Design | United States | Georgia | Atlanta | 770 936-9360 | |
| The Lighting Studio | United States | Colorado | Edwards | 970 926-9595 | |
| Southwest Museum Services | United States | Texas | Houston | 713 462-7754 | |
| Cosentini Assoc. | United States | New York | New York | 212 615-3600 | |
| Guy Smith Lighting | United States | New York | New York | 917 734-3836 | |
| Dan Weinreber Design | United States | California | Venice | 310 745-0322 | |
| Luminae Souter Associates | United States | California | San Francisco | 415 863-8800 | |
| Peter Basso Associates | United States | Michigan | Ann Arbor | 734 913-4749 | |
| Certified Lighting Design | United States | California | Chatsworth | 818 886-6048 | |
| J & M Associates | United States | Maine | Kennebunkport | 207 967-5223 | |
| L Design Studio | United States | New York | New York | 212 686-5400 | |
| Formations Inc. | United States | Oregon | Lake Oswego | 503 675-2400 | |
| MJS Lighting Consultant | United States | Texas | Houston | 713 850-1488 | |
| Spector Group | United States | New York | New York | 212 572-4810 | |
| Davis Crossfield Assoc | United States | New York | New York | 212 927-8822 | |
| Light Options | United States | New York | New York | ||
| Creative Lighting Design & Eng. | United States | Wisconsin | Germantown | 262 242-4432 | |
| Markus Earley Lighting Design | United States | Rhode Island | Providence | 401 245-5677 | |
| CD+M Lighting Design Group | United States | California | Glendale | 818 241-2601 | |
| Millies Engineering Group | United States | Indiana | Munster | 219 924-8400 | |
| PHA Lighting Design | United States | Georgia | Atlanta | 404 892-0176 | |
| Hefferan Partnership Lighting Design | United States | Colorado | Boulder | 303 447-3566 |